Detailed Description
Launched July 10, 1998 from the Russian Baikonur Cosmodrome into a circular sun-synchronous 822x821km orbit inclined 98.1 degrees. It carried a Mode JD 9600 FSK digital transponder, GPS receiver, and imaging subsystem.
TO-31's features included: - Similar to KITSAT-OSCAR-23 in construction.
- 9600 bps AX.25 protocol store-and-forward PACSAT Protocol Suite communications system.
- Digital Signal Processing Experiment (DSPE)
- GPS receiver
- Earth Imaging Subsystem
- On-Board Computer 186 (OBC186) and 386 (OBC386)
TO-31 could take multispectral images. They were produced by combining data from the Narrow Angle Camera, sensing in the green, red, and near-IR spectra. Each image has 1020 x 1020 pixels, covering an area of 100 x 100 km at mean ground resolution of 98 meters / pixel. Red areas indicate healthy vegetation (due to the strong near-IR reflectance of chlorophyll). Urban areas were generally blue-grey. The different colors of fields provided an indication of the state of vegetation (bare soil, marsh, young or mature vegetation, etc).
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